Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!elroy!cit-vax!jerbil
From: jerbil@cit-vax.Caltech.Edu (Stainless Steel Gerbil [Joe Beckenbach])
Newsgroups: comp.unix.questions
Subject: Re: UNIX 9th edition ????
Summary: Trying my hand at 'family trees'; I may be off in places :-)
Keywords: need Berkeley verification
Message-ID: <9434@cit-vax.Caltech.Edu>
Date: 6 Feb 89 18:27:44 GMT
References: <487@maxim.ERBE.SE> <8872@alice.UUCP> <316@dcs.UUCP>
Reply-To: jerbil@cit-vax.UUCP (Stainless Steel Gerbil [Joe Beckenbach])
Organization: California Institute of Technology
Lines: 77

In article <316@dcs.UUCP> wnp@dcs.UUCP (Wolf N. Paul) writes:
>Thus, nobody, so far, seems to have answered the original question: Where do
>System III and System V fit into the 7th, 8th, and 9th Edition succession;
>and whatever happened to System IV? Can someone answer this question?

	Well, taking the notes from when my local guru/more-senior-worker
Don Speck gave me a quick lecture on the subject:

 +++ TRUNK of UNIX Family Tree +++
version 0: PDP-7
version 1: PDP-11/20
version 2: PDP-11/45; 1972-73
version 3:
version 4:
version 5: ports to Interdata 8/32, IBM 370
version 6: 1976. Split to three.

 +++ Trunk continuation +++
version 7: 1977
32V: 1978. Merges into 3 BSD.

 +++ 'AT&T' branch +++
PWB: typesetter
 --- offshoot ---
Unix RT: real time
MERT: real time
 --- end offshoot ---
TS1.0:
TS2.0:
SysIII: which spawned Xenix
TS4.0:
SysV:
SysV Release 2:
SysV R3:
SysV R4: also known as SunOS 5.0  [in the works]

 +++ 'BSD' branch +++
1 BSD:
2 BSD:
 --- offshoot ---
2.8 BSD:
2.9 BSD:
2.10 BSD: 1986? [also received code from 4.3 BSD]
 --- end offshoot ---
3 BSD: has merge from 32V
4 BSD: 1980
4.1 BSD: 1981
 --- offshoot ---
version 8:  [apparently back to the trunk 8-]
version 9:
Plan 9:
SUN OS 2.0: 1983? NFS, received code from 4.2 BSD
SUN OS 3.0:
SUN OS 4.0: 1988
SUN OS 5.0: also known as SysV R4  [in the works]
 --- end offshoot ---
4.1c BSD:
4.2 BSD: 1983, spawned SUN OS 2.0
4.3 BSD: 1986, contributed to 2.10 BSD
4.3 tahoe: 1987?
4.4 BSD: real soon now

	I was tempted to use a directory-like setup to show the relations,
but then the symlinks would have been too much. :-) :-)

	As for the AT&T question, Wolf, I don't know, nor know who does.

	Please don't take this for gospel. Hope this answers a few 
questions, like it did for me.

		Joe Beckenbach
		asst system manager, Caltech CS dept
			"it's Don's fault" :-) :-) :-) :-)
-- 
Joe Beckenbach	joe@csvax.caltech.edu	Caltech 256-80, Pasadena CA 91125
Should programmers be licensed? Yes, but not yet: once we've got it together
	enough to be a profession.